Damper control



H. W. JOCKERS DAMPER CONTROL Jan. 12, 1932.

Filed Oct; 17. 1931 Patented Jan. 12, 1932' UNITED STATE-S PATENT OFFICE HARRY W. JOCKERS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF '1'0 JAMES M. DENNEY,

OF PENNSYLVANIA DAMPER CONTROL Application filed. October 17, 1931. Serial No. 569,499.

The object of this invention is to devise a novel construction and arrangement of a damper control which will automatically actuate the dampers to maintain a desired standard of temperature in a room or other compartment which is to be heated.

A further object of the invention is to devise a novel damper control which is controlled by a thermostat to close or open the circuit of an electric heating unit which is effective to heat airto'place a pressure on a liquid',.which latteris effective to unbalance the damper control, thereby causing the primary draftdamper andv the check damper of a furnaceto'be correspondingly actuated.

With the above and other objectsin view, as will hereinafter more clearly appear, my invention comprehends a novel damper con.- trol.

0 It further comprehends a novel damper control comprising a casing. containing a heating medium which is heated by means of an electric heating unit controlled automatie cally and-preferably by a thermostat control located in a room or compartment whichis to be heated. The medium heated by the electric heating unit is preferably air which passes to a compartment containing liquid which, under pressure, will pass into a compartment at the opposite end of the damper control thereby causing a rocking movement of the damper control to-thereby-control the dampers of a furnace.

It further comprehen'ds a novelconstruc- 5 tion' of a pivotally mounted casing having a centralchamber and end chambers, the central chamber communicating'by a port with one of said end chambers, the other'end chamber having a vent to the atmosphere, and said chambers being; interconnected sothat fluid canpass from one to the other.

Other novel features of construction and advantage will hereinafter clearly appear in the detailed description and the appended claims.

For the purpose ofillustrating theinventiony l have shown in the accompanying drawingstypicalembodiments of it, which, in practice, will give satisfactory and reliable =results.-- It is, however,to be. understood Figure 2 is a sectional elevation of the damper control, showing moreparticularly the manner in which it is constructed.

Figures 3 and 4 represent other cmbodi ments of the invention.

Similar. numerals of reference indicate corresponding parts.

Referring to the drawings:

Referring first to Figures 1 and 2, 1 designates a damper control embodying my invention. The damper control is provided with a casing. 2 having located centrally thereof, near its upper end, an apertured lug 3, thereby adapting it to be pivotally supported as at 4, to a stationary object, such as, for example, the furnace 5, which latter may be of any desired or conventional construction.

The casing 2 is provided with spaced partitions 6 and 7 which contribute with the casing to form acentral compartment 8 and end compartments 9 and 10 respectively. The central compartment 8 communicates with the end compartment by means of a port 11; The end compartments 9 and 10 communicate with a by-pass 12 whereby the liquid13 can pass from one end compartment to the other. The end compartment 10 is provided with a vent port 14.

The central compartment 8 has located in it in any desired manner, an electric heating unit 15, the terminals of which are electrically connected with the binding post of athermostat 16 of any desired or conventional type. The furnace 5 is provided in any desired or conventional manner with a pivotal damper 17 for primary draft and-a check damper 18, preferably located in the exit flue from the furnace. The damper 17 is connected with the casing 2 of the damper control by means of a chain or cable 19 which passes over pulleys 20. In a similar manner the check damper 18 is connected with the damper control by means of a chain or cable 21 which passes over a pulley 22.

In the embodiment seen in Figure 3 I have shown another embodiment of the invention wherein the damper control is connected with the damper in a somewhat different manner from that shown in Figure 1, it being apparent that the manner of connecting the clampers to the damper control may vary widely in practice. r

In Figure 3 the damper control 1 is shown as being pivotally mounted by means of a support 23. The cable 21 is connected to one end of. the damper control 1, passes over the pulleys 25, and is connected to one end of a lever 26, pivotally supported by means.

of a cable 27 One end of the lever 26 is connected by a chain 28 to the primary draft damper 29 which controls the admissionof air beneath the grates. The other end of the lever 26 is connected by means of a chain 30 with the check damper 31 controlling the exit of products of combustion from the furnace.

In the embodiment seen in Figure 4, instead of having the central chamber 8, I employ a separate casing 32 adapted to be mounted on a stationary support and connected by means of a flexible conduit .33 with the chamber of an end casing 34 which is in communication by means of a pipe or by-pass 35 with the chamber of an end casing 36. The chamber of the casing 36 is provided with a vent 37 leading to the atmosphere. The end casings are connected by a bar 38 which is 7 supported by means of a cable 39 so that the end casings as a unit are pivotally mounted. The chains 10 and 41 connected with the end casings, are connected with the primary draft damper, and the. check damper in a similar manner to that shown in Figure 1. The stationary casing 32 has its chamber provided with an electric heating unit 42- which is connected witha thermostat in a similar manner to that shown in Figures 1 and 2 so that the air heated will pass'through the flexible conduit 33 above the liquid 44% contained in the end casing 4, thereby creating a pressure on said liquid and causing it to pass through the pipe or bypass 35 into the chamber of the end casing 36 thus overbalancing the damper control so that the I chain 41 may move upwardly and the chain 40 move downwardly thereby actuating the dampers to which they are connected.

The operation of my novel damper control will now be apparent to those skilled in the art and is as follows.

I have shown the damper control in its horizontal or neutral position but it is to be understood in practice it will rock so that it will be inclined in one direction or the other.

Assuming now that the-temperature in the room in which the thermostatic or other automatic control, such as 16, is located, drops below the predetermined standard of temperature, the thermostat will close the electric circuit through the electric heating unit 15 so that the air in the central chamber 8 is heated. This air passes through the port 9 exerting a pressure on the fluid 13 causing it to flow through the by-pass 12 into the chamber .10 thereby overbalancing the damper control and causing the end portion containing the chamber 10 to move downwardly and the end portion containing the chamber 9 to move upwardly. This causes the primary'damper 17 to open and the check damper 18 to close. hen the temperature reaches the predetermined standard, the circuit will open, there will be a vacuum in the chamber 8 and the liquid will be withdrawn from the chamber 10 through the bypass 12 into the chamber 13 thereby causing the damper control to rock in the opposite direction so that the primary damper 17 will close and the check damper 18 will open.

In the embodiment seen in Figure 3 the construction is the same except the manner of connecting the dampers with the damper control. p I

In the construction seen in Figure 4 instead of having the central chamber 8, a stationary chamber is employed in which the air is automatically heated to cause it to pass into the chamber of the end casing 34 above the fluid therein to exert a pressure to cause such fluid to travel through the by-pass 35 into the chamber of the end casing 36 thus overbalancing vthe damper control and causing it to rock and thereby control the dampers.

When the circuit is opened through the electrical heating unit, the air cools off and the vacuum formed in the chamber of the end casing 3 1 causes the fluid to travel from the chamber of the end casing 36 through the by-pass 35 into the chamber of the end casing 34L and the damper control will rock in the opposite direction. I

It will thus be apparent that in accordance with'this invention I provide a temperature controlling means which closes or opens the circuit through an electrical circuit to heat air. to pass to one end of a pivotally mounted damper control to cause fluid to flow to one end or the other of the damper control and thereby cause it to rock and thus automatically control the primary damper and the check damper of a furnace.

It will now be apparent that I have devised a new and useful damper control which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while I have, in the present instance, shown and described preferred embodiments thereof which will give in practice satisfactory and reliable results, it is to be understood that these embodiments are susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages.

Having thus described my invention what I claim as new and desire to secure by Letters Patent, is

1. A fulcrumed casing having spaced partitions contributing to form liquid receiving end chambers and an intermediate chamber, said intermediate chamber communicating with the upper portion of one of said end chambers, the other of said end chambers being vented to the atmosphere, said end chambers communicating with each other at their lower ends, an electric heating unit in said intermediate chamber, a thermostat controlling said electric heating unit, and draft dampers connected with said casing to be operated thereby.

2. In a damper control, a fulcrumed casing having partitions contributing to form liquid receiving end chambers and an intermediate chamber, said intermediate chamber communicating with the upper portion of one of said end chambers, the other of said end chambers being vented to the atmosphere, thermostatically controlled means to heat the air in said intermediate chamber, a by-pass communicating with said end chambers whereby liquid may pass from one to the other and effect a rocking movement of said casing, and draft dampers connected with said casing to be controlled by the rocking movement thereof.

3. In a damper control, a casing adapted to bepivotally supported and provided with liquid receiving end chambers, and a third chamber, the third chamber communicating with the upper portion of one of said end chambers, the other of said end chambers being vented to the atmosphere, said end chambers being intercommunicating whereby liquid may pass from one to the other, heating means in said third chamber, a thermostat located in a place at which the temperature is to be controlled and controlling said heating means, a source of heat, and draft means for said source of heat controlled by the rocking movement of said casing.

HARRY W. J OOKERS. 

